A slight risk of severe thunderstorms Sunday July 31. MLCAPE is only 750-1250 but with 30kt mid level and 60kt upper level shear isolated severe thunderstorms are likely with large hail and high winds. Any supercells will be the LP variety due to dews barely getting into the mid teens. The dry August air appears to be making an early appearance, as is the August heat. August is LP month for sure, and hopefully no more soupy green hail bombs this year.

On another note the setup last Monday became nocturnal with storms firing up all night along the QE2 between Olds and Leduc. Since then another 2 days saw thunderstorms once again including Non-severe storms along #13 on July 28 and severe cells around Calgary on the 29th that promoted tornado warnings. Even with CAPE values as low as 500j/kg the Shear was enough to keep the severe thunderstorms going

Just a week after the exceptionally severe outbreak of July 18-20; severe thunderstorms are once again possible over much of central Alberta though the setup is not as epic as last week. 1500-2000 MLCAPE and shear is quite weak(30-40kt upper and less than 30kt in the mid levels). There should however be Severe pulse storms and a few longer lived cells with large hail, high winds, and heavy rain. Stay tuned for updates

AlbertWX was on the scene of not one but two monster supercells. We intercepted the cells near Millet and nearly got cored ourselves! Residents reported tennisball sized hail in places. Cars were trashed streets were flooded and siding looked like it was shot up with a shotgun.

Shear values of 50-60kt in the high levels and 30-40kt in the mid levels coupled with mixed layer cape values of 2250 are going to be a recipe for an excellent setup for Monday in central and southern Alberta. Me and Mike will be out on Monday if the models hold we will be staging somewhere south of Edmonton most likely Red Deer. This setup has the potential to unleash large tornadoes and large hail. I fully expect that Environment Canada will be issuing severe thunderstorm watches by noon. Sunday also looks like some possibility of supercells in the region as well. Stay tuned to AlbertaWX for updates!

City of Red Deer
8:40 PM MDT Thursday 07 July 2011
Tornado warning for
City of Red Deer issued

At 8.30 PM MDT RCMP reports indicate a tornado on the ground 5 km west of Innisfail. The storm is moving northeast at 30 km/h. Earlier public reports indicate that this tornado initially touched down near 8.12 PM MDT. This storm also has the potential to produce very heavy downpours and very large hail.

This is a warning that severe thunderstorms with tornadoes are imminent or occurring in these regions. Monitor weather conditions. Take immediate safety precautions.

Please refer to the latest public forecasts for further details.

A warm, moist airmass is in place through Central Alberta with cooling coming in aloft from a developing weather system. Thunderstorms have started to trigger along the foothills and will track into Central Alberta this evening. Some of these thunderstorms are expected to become severe giving large hail, strong winds and heavy rain.

At 4.40 PM a weather watcher reported a brief tornado touchdown just southwest of bergen Alberta. Conditions remain favourable for this thunderstorm to produce possible tornadoes as the storm tracks to the east at 15 km/h.

This is a warning that severe thunderstorms with tornadoes are imminent or occurring in these regions. Monitor weather conditions. Take immediate safety precautions.

A warm, moist airmass is in place through Central Alberta with cooling coming in aloft from a developing weather system. Thunderstorms have started to trigger along the foothills and will track into Central Alberta this evening. Some of these thunderstorms are expected to become severe giving large hail, strong winds and heavy rain.